tracing/fastboot: add a script to visualize the kernel boot process / time

[linux-2.6-omap-h63xx.git] / kernel / kthread.c

diff --git a/kernel/kthread.c b/kernel/kthread.c
index 96cff2f8710baac71e7ce91ec96202665142b5e8..50598e29439a07c3b3acbb318514efa377a44e33 100644 (file)
--- a/kernel/kthread.c
+++ b/kernel/kthread.c
@@ -13,6 +13,7 @@
 #include <linux/file.h>
 #include <linux/module.h>
 #include <linux/mutex.h>
+#include <trace/sched.h>
 
 #define KTHREAD_NICE_LEVEL (-5)
 
@@ -206,6 +207,8 @@ int kthread_stop(struct task_struct *k)
        /* It could exit after stop_info.k set, but before wake_up_process. */
        get_task_struct(k);
 
+       trace_sched_kthread_stop(k);
+
        /* Must init completion *before* thread sees kthread_stop_info.k */
        init_completion(&kthread_stop_info.done);
        smp_wmb();
@@ -221,6 +224,8 @@ int kthread_stop(struct task_struct *k)
        ret = kthread_stop_info.err;
        mutex_unlock(&kthread_stop_lock);
 
+       trace_sched_kthread_stop_ret(ret);
+
        return ret;
 }
 EXPORT_SYMBOL(kthread_stop);